The video sharing process you use depends on whether you need to include events with the video and whether the people you are sharing with are Dartfish users or not.
Use the SHARE feature of the Library to share video - anyone can replay the video but Dartfish users will also be able to view events in their software.
Use the PUBLISH GAME feature of Tagging - the video (with or without tags) can be viewed on dartfish.tv by those who you give access. If you allow it, video can also be downloaded for offline viewing and Dartfish users can download the video and the dartclip data file to be able to see the tags in their software.